Evidence for the Electromagnetic Production of the $A_{1}$

2 April 1984

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 52 (14) , 1195-1198
https://doi.org/10.1103/physrevlett.52.1195

Abstract

Using data on the coherent production of

π^{+} π^{+} π^{-}

systems in

π^{+}

collisions with nuclei, we have extracted an estimate for the radiative partial width of the

A_{1}

. The rate for

{A_{1}}^{+} \to π^{+} γ

is 640±246 keV, which is a factor of about 2-3 below the value expected on the basis of predictions from quark models and from vector dominance ideas.

Keywords

QUARK MODEL

This publication has 19 references indexed in Scilit:

Partial-wave analysis of backwardly produced three-pion systems in K−p interactions at 4.2 GeV/c
Nuclear Physics B, 1981
Diffractive production of 3π states at 63 and 94 GeV
Nuclear Physics B, 1981
Evidence for $I = 1$ ( $A_{1}$ ) and $I = 0$ ( $H$ ) Axial-Vector Resonances in Charge Exchange
Physical Review Letters, 1981
Spin parity analysis of the decay τ→νρπ
The European Physical Journal C, 1980
Experimental proof of the existence of the A1 meson
Physics Letters B, 1980
Observation of $μ 3 π$ Events in $e^{+} e^{-}$ Annihilation
Physical Review Letters, 1978
Backward enhancement in the A1 region and A2 production in the reaction π-p→pfπ+π-π- at 9 and 12 GeV/c
Physics Letters B, 1978
Evidence for the τ → νϱπ decay mode
Physics Letters B, 1978
Spin-Parity Analysis of the $A_{3}$
Physical Review D, 1973
Evidence for a $π - ρ$ Interaction Produced in the $π^{+} p$ Reaction at 3. 65 BeV/c
Physical Review Letters, 1964

Evidence for the Electromagnetic Production of theA1

Abstract

Keywords

Evidence for the Electromagnetic Production of the $A_{1}$